1,3-Dibromobenzene → 4-(3'-Bromobiphenyl-3-yl)dibenzothiophene

HRID 2039430Notes

Reaction equation

HRID 2039430 reaction equation
[CH:1]1[C:9]2[C:8]3[CH:10]=[CH:11][CH:12]=[CH:13][C:7]=3[S:6][C:5]=2[C:4]([C:14]2[CH:15]=[C:16](B3OC(C)(C)C(C)(C)O3)[CH:17]=[CH:18][CH:19]=2)=[CH:3][CH:2]=1.[Br:29][C:30]1[CH:35]=[CH:34][CH:33]=[C:32](Br)[CH:31]=1.C(=O)([O-])[O-].[K+].[K+]>C1(C)C=CC=CC=1.O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[Br:29][C:30]1[CH:31]=[C:32]([C:16]2[CH:17]=[CH:18][CH:19]=[C:14]([C:4]3[C:5]4[S:6][C:7]5[CH:13]=[CH:12][CH:11]=[CH:10][C:8]=5[C:9]=4[CH:1]=[CH:2][CH:3]=3)[CH:15]=2)[CH:33]=[CH:34][CH:35]=1

Participants

7

Reactant 3

HCID 79271,3-DibromobenzeneHCID 11430Potassium CarbonateHCID 595753552-(3-(Dibenzo[b,d]thiophen-4-yl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane

Product 1

HCID 669744624-(3'-Bromobiphenyl-3-yl)dibenzothiopheneYield 79.3%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolventHCID 1140TolueneSolvent

Procedure

2-(3-(dibenzo[b,d]thiophen-4-yl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (8.80 g, 22.78 mmol) and 1,3-dibromobenzene (21.49 g, 91 mmol) were dissolved in toluene (300 mL), and potassium carbonate (9.44 g, 68.3 mmol) in 50 mL of water and the Pd(PPh3)4 catalyst (0.263 g, 0.228 mmol) were then added. The reaction mixture was degassed and refluxed under N2 overnight. The organic layer was then separated, evaporated and subjected to column chromatography on silica gel, eluted with hexane/DCM 9:1 v/v mixture, providing 4-(3′-bromo-[1,1′-biphenyl]-3-yl)dibenzo[b,d]thiophene (7.5 g, 18.06 mmol, 79% yield) as white solid.

Workup

  1. customThe reaction mixture was degassed
  2. temperaturerefluxed under N2 overnight
  3. customThe organic layer was then separated
  4. customevaporated
  5. washeluted with hexane/DCM 9:1 v/v mixture

Sources & evidence

ORD record
ord-9b3d76d80e424dd29b9bb938ddf6ac45
Source dataset
uspto-grants-2013_11
Patent number
US08580399B2

Reaction notes

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